12110301221 has 2 divisors, whose sum is σ = 12110301222. Its totient is φ = 12110301220.

The previous prime is 12110301211. The next prime is 12110301227. The reversal of 12110301221 is 12210301121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12093400900 + 16900321 = 109970^2 + 4111^2 .

It is a cyclic number.

It is not a de Polignac number, because 12110301221 - 2³⁰ = 11036559397 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12110301196 and 12110301205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12110301227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6055150610 + 6055150611.

It is an arithmetic number, because the mean of its divisors is an integer number (6055150611).

Almost surely, 2^12110301221 is an apocalyptic number.

It is an amenable number.

12110301221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12110301221 is an equidigital number, since it uses as much as digits as its factorization.

12110301221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 12110301221 its reverse (12210301121), we get a palindrome (24320602342).

The spelling of 12110301221 in words is "twelve billion, one hundred ten million, three hundred one thousand, two hundred twenty-one".